JP6327781B2 - cap - Google Patents

Description

  The present invention relates to a cap attached to a mouth portion of a container filled with liquid contents or the like, and in particular, a sealing plate for opening a spout through a thinned weakened portion that can be broken into a partition that seals the inside of the container. It is related with the cap which provided.

  It is attached to the mouth of the container filled with the content liquid, and then the sealing plate provided via the thinned weakened part in the partition that seals the inside of the container is separated and removed from the partition by pulling up the pull ring when unplugged, A pull-top cap that opens a spout for pouring out the content liquid has been well known in the art (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2001-261051

In order to unplug a conventional cap such as the plastic cap described in Patent Document 1, the pulling ring is pulled upward, whereby the pulling plate support-side sealing plate is pulled upward, and the pulling ring side Breaking of the thinned portion proceeds, and finally, the end on the opposite side of the column is cut off from the partition wall, and the spout opens.
In the intermediate process in which the thinned weakened part breaks, the pulling direction and the breaking progress direction are not significantly different, the cut part is concentrated in a narrow range, and the pulling force acts as a shearing force. The thinned weakened portion can be easily cut with a small force.

However, when the thinned weakened portion is broken and just before the sealing plate is completely cut off, the pulling force of the pull ring against the thinned weakened portion of the predetermined range that is slightly connected is in the direction of breakage. Since the thin-walled weakened portion has to be broken at once by a pulling force, it has a problem that it requires a large force and is difficult to separate.
In particular, when the peripheral shape of the end of the sealing plate opposite the pull ring support is R-shaped or circular, the length of the peripheral edge where the pulling force immediately before the separation works is elongated in the separation direction. Since it is longer than the plate, it is difficult to separate it, and even if the pull ring is shaken left and right to cut the thinned weakened portions alternately one side at a time, the sealing plate is thin and deformed and extended, and the force to shake the pull ring left and right is In some cases, it did not work as a shearing force and was difficult to cut.

  In addition, since a tensile force acts on the fractured portion just before the separation, a whisker-like mark caused by the tensile force is formed on the fracture surface of the spout formed by separating the sealing plate around the opposite side of the pull ring column. May occur.

  An object of the present invention is to solve the above-mentioned problems, and when the plug is pulled out by a pull ring, the sealing plate can be easily cut off with a light force, and the breakage around the spout formed after the sealing plate is removed. An object of the present invention is to provide a cap capable of forming a smooth spout without generating a flare in the cross section.

In order to solve the above-described problems, the present invention provides a cap that is attached to the mouth of a container as a cap, and a partition wall that seals the inside of the container is connected to a dispensing cylinder that guides the contents. Is provided with a severable flat plate-shaped sealing plate that forms a spout defined by the thinned portion on the inner side of the dispensing tube, and the sealing plate is erected on the upper surface in the vicinity of the periphery. A pull ring provided via a support and a recess that forms a wall extending downward along an end periphery opposite to the support are provided, and the recess is an end periphery opposite to the support of the sealing plate. Adopted a configuration characterized in that it is recessed inward from the upper surface of the R-shaped part, and the peripheral edge of the sealing plate on the side opposite to the support column is reinforced by a wall and has high rigidity To do.

The cap of the present invention is provided with a recess that forms a wall portion that extends downward along the edge periphery of the sealing plate opposite to the support plate, and the recess has an end periphery of the sealing plate opposite to the support plate. Since the concave portion is formed inward from the upper surface of the R-shaped portion, the wall portion serves as a rib that reinforces the peripheral edge of the end opposite to the support column, and the end where the sealing plate is finally cut off Increases the rigidity of the periphery of the part, shearing force is easy to work on the thinned weakened part near the edge of the edge, and when cutting the sealing plate, it can be cut with a light force, and the material is extended by the pulling force It is possible to prevent the occurrence of whiskers.

It is a figure which shows the closed state of the cap of this invention, (a) is a cross-sectional side view, (b) is a bottom view. It is a figure which shows the cover open state of the cap of this invention, (a) is a top view, (b) is a cross-sectional side view.

  Next, the cap of the present invention will be described with reference to the drawings showing examples.

In FIGS. 1 and 2, A is a cap body attached to the container body D by a stopper, and B is an upper lid connected to the cap body A via a hinge C.
Engagement ridges 2 are provided on the outer periphery of the mouth portion 1 of the container body D.

As shown in FIGS. 1 and 2, the cap main body A includes a partition wall 3 that seals the inside of the container, a pouring cylinder 4 that stands on the periphery of the partition wall 3, and an upper part that is connected to the outer periphery of the pouring cylinder 4. An outer periphery in which a wall 5, an engagement cylinder portion 6 suspended from the upper wall 5, and an outer periphery of the engagement cylinder portion 6 are connected to each other at a predetermined interval, and a hinge C is connected to a predetermined portion of the outer periphery of the upper end. It consists of a cylindrical portion 7.
The outer periphery of the lower end of the engaging cylinder part 6 and the inner periphery of the lower end of the outer peripheral cylinder part 7 include a connecting piece 8 provided on the opposite side of the hinge C and a plurality of breakable weakening pieces 9 arranged at intervals. It is connected through.

The partition wall 3 is provided with a flat plate-shaped sealing plate 12 defined by the thinned weakened portion 11 on the inner side of the pouring cylinder 4, and the sealing plate 12 is separated and removed from the partition wall 3 at the time of unplugging. Open the exit.
On the upper surface of the sealing plate 12, a pull ring 13 is inserted in the vicinity of the peripheral edge on the hinge C side via a support column 14 and is pulled up by inserting a finger when unplugging. In the vicinity of the end 15 on the opposite side, there is provided a recess 17 that forms a wall 16 that extends downward along the periphery of a predetermined range.

The peripheral edge in the vicinity of the end 15 of the sealing plate 12 has an R shape, and the concave portion 17 has an R-shaped periphery of the end 15 of the sealing plate 12 so that the wall 16 corresponds to at least the R-shaped peripheral edge. It is recessed inside from the upper surface of the site | part which has comprised.
In the present embodiment, only the peripheral edge of the predetermined range near the end 15 of the sealing plate 12 has an R shape, but the entire sealing plate 12 has a circular shape or the peripheral edge of the sealing plate 12. When many parts are R-shaped, the concave portion 17 may be provided so as to correspond to the peripheral edge over a predetermined circumferential angle range centering on the end 15.

  Further, in this embodiment, as shown in FIG. 1, the thinned weakened portion 11 has a width in the periphery in the vicinity of the end 15 on the side opposite to the support 14 of the sealing plate 12, and the end periphery on the support 14 side. It is formed so as to be smaller than the width of.

The upper wall 5 is connected to the middle outer periphery of the dispensing cylinder 4, and the lower part of the upper wall 5 is the opening of the container body D together with the inner periphery of the engaging cylinder part 6 and the lower outer periphery of the dispensing cylinder 4 A fitting groove for fitting the portion 1 is formed, the mouth portion 1 is fitted into the fitting groove, and the engaging protrusion 2 is engaged with the engaging tube portion 6.
A lid engaging portion 18 that engages with the upper lid B is erected on the upper portion of the upper wall 5, and a bulging portion 19 having an enlarged diameter is formed at the upper end of the outer periphery of the lid engaging portion 18.

As shown in FIGS. 1 and 2, the upper lid B includes a top wall 20 and a side wall 21 that is suspended from the periphery of the top wall 20. An inner cylinder 22 to be inserted into the inner periphery is suspended.
The side wall 21 is provided with an engagement recess 23 that engages with the bulging portion 19 of the cap body A at the lower end of the inner periphery, and a hinge C is continuously provided at a predetermined position on the lower end of the outer periphery. A knob 24 is provided on the side.

  The cap of the present embodiment is a hinge cap provided with the upper lid B. However, the cap is not necessarily a hinge cap, a screw cap for screwing the upper lid, a cap for simply pressing and fitting the upper lid, An appropriate form such as a cap without an upper lid can be adopted.

Next, usage modes and operational effects of this embodiment will be described.
The cap of the present embodiment is plugged in the closed state shown in FIG. 1 and attached to the mouth 1 of the container body D.
In the plugging step, a fitting groove formed between the engaging cylinder portion 6 and the outer peripheral cylinder portion 7 is applied to the mouth portion 1 of the container body D, and a pressing force is applied from above the upper lid B. The fitting groove fits over the engaging protrusion 2 and is fitted to the mouth portion 1.

In order to unplug the cap of the present embodiment when the container is used, the upper lid B is opened as shown in FIG. 2, the pull ring 13 is pulled upward, the sealing plate 12 is pulled up via the support column 14, and sealed from the partition wall 3. The plate 12 is cut off and the spout is opened.
When the pull ring 13 is pulled up, first, the end portion on the hinge C side of the sealing plate 12 on which the support column 14 is provided is pulled upward, and the fracture starts from the thinned weakened portion 11 near the end portion.

  When the thinned weakened portion 11 breaks and the portion where the sealing plate 12 is separated from the partition wall 3 becomes larger, the separated sealing plate 12 is deformed so as to bend upward gradually due to the pulling force of the pull ring 13. However, in the intermediate process in which the thinned weakened portion 11 is broken, the pulling direction of the pull ring 13 is not greatly different from the breaking progress direction, the cut portion is concentrated in a narrow range, and the pulling force of the pull ring 13 is a shearing force. Therefore, cutting can be easily performed with a small force.

When the thinned weakened portion 11 further breaks and the sealing plate 12 is largely separated and the cut portion is adjacent to the wall portion 16 formed by the concave portion 17, the wall portion 16 functions as a reinforcing rib. Since the rigidity of the stop plate 12 is increased, deformation and extension of the sealing plate 12 are suppressed thereafter.
At this point, cutting has not yet progressed to the R-shaped peripheral edge, and the pulling force of the pull ring 13 acts as a large shearing force that concentrates on the cutting portion with respect to the thinned weakened portion 11 and facilitates cutting. Is done.

  When the cutting site reaches the thinned weakened portion 11 near the edge 15 formed in the R shape, the breaking line of the thinned weakened portion 11 changes in a direction perpendicular to the pulling direction of the pull ring 13. Therefore, at the tip portion of the R-shaped peripheral edge, a force is applied to the thinned weakened portion 11 in a predetermined range at a time, but the vicinity of the end portion 15 of the sealing plate 12 is reinforced by the wall portion 16 to increase the rigidity. Therefore, upward bending and extension are prevented, shearing force is easy to work, and it can be easily separated.

  Further, when it is difficult to separate the pull ring 13 by pulling it straight up, if the pull ring 13 is pulled while swinging left and right, the rigidity in the vicinity of the end 15 of the sealing plate 12 is high and deformation or extension does not occur. By changing, it is possible to increase the force component in the breaking progress direction and increase the shearing force, and it is possible to alternately advance the cutting of the thinned weakened portions 11 on both sides of the end portion 15. The plate 12 can be cut off.

Further, since the peripheral edge in the vicinity of the end 15 where the sealing plate 12 is finally cut off is easily acted on by the reinforcement of the wall part 16 as described above, a whisker-like mark is formed on the fracture surface of the peripheral edge. A smooth spout peripheral edge can be obtained without standing.
Further, in the present embodiment, the width of the thinned portion 11 is formed so as to be small at the periphery in the vicinity of the end portion 15, so that the deformation of the bending and extending of the thinned portion 11 in the vicinity of the peripheral portion is suppressed to be small. And the shearing force becomes easier to work, and it is possible to further prevent the occurrence of flashing.

  The cap of the present invention is suitable for application to a pull-top type cap that is attached to the mouth of a container filled with liquid contents or the like. Any type of cap that removes the provided sealing plate to form a spout can be widely applied.

A Cap body B Upper lid C Hinge D Container body 1 Mouth part 2 Engagement ridge 3 Bulkhead 4 Extraction cylinder 5 Upper wall 6 Engagement cylinder part 7 Outer cylinder part 8 Connection piece 9 Weakening piece 11 Thinning weakening part 12 Sealing plate 13 Pull ring 14 Post 15 End 16 Wall 17 Recess 18 Lid Engagement 19 Lid Engagement 20 Top Wall 21 Side Wall 22 Inner Tube 23 Engagement Recess 24

Claims (1)

A cap attached to the mouth of the container,
A bulkhead that seals the inside of the container is connected to the dispensing cylinder that guides the contents,
The partition wall is provided with a plate-shaped sealing plate that can be cut off to form a spout defined by the thinned portion on the inside of the spout tube,
The sealing plate is provided with a pull ring provided via a support column erected on the upper surface in the vicinity of the periphery, and a recess that forms a wall extending downward along the periphery of the end opposite to the support column,
The recessed portion is recessed inward from the upper surface of the portion where the edge periphery on the side opposite to the support column of the sealing plate forms an R shape,
A cap characterized in that the end peripheral edge of the sealing plate opposite to the support post is reinforced by a wall and has high rigidity.

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